The first thing you need to know, is that the rings attached to the Calyx have nothing to do with the headrest. Those rings can be used to attach toys, teethers, sucking cloths, or anything else you might find useful. They’re also for the Kit Bag, a diaper bag attachment we’ve got in the works.
The headrest is rectangular. Along the top edge is a strip of webbing, which extends out to each side. The straps on the sides have clips, which allow the webbing to loop around the shoulder straps and clip to itself. That holds the headrest in place, and allows the headrest to adjust to support the baby in a comfortable position. The bottom edge is hemmed, with elastic cord loops at each corner. The shoulder straps are threaded through these loops before you put the carrier on.
While your baby is awake, it will look like this. If you don’t want it to hang down in front of the panel, you can attach the webbing straps in advance, but it makes it much harder to deal with when you want to use it. If you have a helper with you, it’s not as difficult.
When your baby has fallen asleep, you reach back to grab the hanging webbing strap. Gently ease the headrest over the baby and loop the webbing around the shoulder strap, clipping it to itself. It is a good idea to use a mirror, window, or helper to make sure that the head is positioned well, and airways are clear.
Great looking carrier